Monday, July 30, 2018

For Newbies: The Burr Federal Wells -- July 30, 2018; Meanwhile, CLR's Oakdale Whitman Wells Are Being Re-Fracked

Updates

December 19, 2018: updated here.

October 23, 2018: update here.

July 31, 2018: huge mistake on my part regarding the Whitman wells. See comment from reader. Corrections and clarifications have been made -- continue reading.

First correction is easy:
  • 20210, 803, CLR, Whitman 2-34H, Oakdale, API - 33-025-01259; t9/11; cum 1.597 million bbls 8/18; see production profile below; FracFocus: no re-frack; original frack, 24 stages; 2.4 million lbs sand; in addition to the 1.6 million bbls of oil, a cum of 1650315 MCF gas (275K boe natural gas -- so we're talking close to 2 million boe so far;
Second correction (not a correction so much as an update): as the reader noted, the original #20212 was not drilled to planned depth and not completed back in 2011 due to downhole issues. Last summer, CLR went back in, drilled to planned depth and fracked the well. From the file report:
  • spud date: January 19, 2011
  • original TD date: April 23, 2011 -- to 13,681 feet, equivalent to a short lateral
  • re-entry date: July 5, 2017
  • TD date: July 8, 2017 (only three days to drill to depth after re-entry)
  • TD: 21,230 feet
  • an Upper Devonian Three Forks well within the Rocket prospect
  • introduction: Well drilling operations ceased on April 23, 2011, after dangerous levels of oil and gas pressure rendered further drilling unwise at the time. The well has been in production in its incomplete form (13681' MD reached, open hole, no fracking) since that time and has produced approximately 120,000 bbls of petroleum.  
  • this report primarily concerns re-entry drilling information only, as complete data from the original drilling was generated by a different mud-logging company and is at points incomplete. Where available, salient points from the original drilling events have been included.
  • the well plan ... three scenarios were foreseen ... the rig operators prepared for all events, the high-pressure scenario being the most dangerous, but likely manageable...
  • original (back in 2011) drilling efforts ceased at 13681' MD for high (dangerous) levels of oil and gas pressures. As of 2017, these were deemed low enough for re-entry to attempt drilling to the originally planned TD point, hopefully to produce at least moderate amounts of oil, as indicated by original production levels.
  • background gas levels were initially 600 - 1200 units with circulation through the gas buster, which was activated after the first trip gas at 10,000 units. This well had been hard to control when the first segment was drilled in 2011, so all precautions for safety and control were observed.  
  • gas increased to 1800 - 2200 units at 17500' MD, when the formation took a relatively sharp turn and then rolled over, similar to the structure observed from the initial segment and may have signaled a fracture and/or stratigraphic trap of less, but still significant, production as the first one.
  • the Upper Devonian Three Forks formation was intercepted at 11596' TVD ( ~ 8618' SS).
  • it was determined initially that the ideal target would be approximately 15' thick, beginning 15' below the Three Forks top, and extending to 30' below the same reference point.
Original Post 

A reminder: the Burr Federal wells are being updated now that they are coming back on line after being off line while neighboring wells were being re-fracked. See this post. Other than a few exceptions, the older wells are showing an incredible jump in production after coming back on line. Two examples are given at the link. Truly amazing. Whether these wells are being re-fracked or not, I have not checked. At this point, at least for me, machts nichts; it hardly matters what explains this; it is a huge "win" for mineral owners, and the state of North Dakota.

**************************
Meanwhile, Is Something Going On With CLR's Whitman Wells?
Yup: A Re-Entry And Frack Of A Well That Was "Aborted" Back In 2011 Due To Dangerous Gas Levels

Section 34-147-96, Oakdale oil field; only three older wells sited in this section. One was off-line for a few months recently and is now back on line; the other two are now off line. FrackFocus will be checked.

The wells:
  • 17061, 664, CLR, Whitman 11-34H, Oakdale, API - 33-025-00723; t6/08; cum 452K 8/18; see production profile below; FracFocus: no re-frack;
  • 20210, 803, CLR, Whitman 2-34H, Oakdale, API - 33-025-01259; t9/11; cum 1.597 million bbls 8/18; see production profile below; FracFocus: no re-frack; original frack, 24 stages; 2.4 million lbs sand; in addition to the 1.6 million bbls of oil, a cum of 1650315 MCF gas (275K boe natural gas -- so we're talking close to 2 million boe so far; [Update: this well went off-line 9/17, and did not come back on line until 8/18; in 8/18, only four days of production of 2,075 bbls which extrapolates to 15,000 bbls in one month;
  • 20212, 482, CLR, Whitman 3-34H, Oakdale, API - 33-025-01261; t9/11; cum 181K 5/18; see production profile below; well, isn't this interesting -- yup, this well was fracked 9/23/17 - 10/5/17; 9.8 million gallons of water; 84% water; 15% sand; sundry form in file report: 61 stages; 14.5 million lbs sand; [Update: this well went off line 4/18 and came back on line 8/18; in 8/18 produced 4,731 bbls over 4 days which extrapolates to 35,000 bbls in one month;
The graphic:


17061:
PoolDateDaysBBLS OilRunsBBLS WaterMCF ProdMCF SoldVent/Flare
BAKKEN5-201831237822201542695239454
BAKKEN4-20183023712166160272424840
BAKKEN3-201831244023871522619234230
BAKKEN2-20182822942581111225120270
BAKKEN1-201864960403513030
BAKKEN12-2017100011110
BAKKEN11-2017200022220
BAKKEN10-20170000000
BAKKEN9-20177420545306696130
BAKKEN8-20173119722157114305428060
BAKKEN7-2017311982181111529142448218

20210 (a huge, huge well):
PoolDateDaysBBLS OilRunsBBLS WaterMCF ProdMCF SoldVent/Flare
BAKKEN5-20180000000
BAKKEN4-20180000000
BAKKEN3-2018002210000
BAKKEN2-20180000000
BAKKEN1-20180000000
BAKKEN12-201720019000
BAKKEN11-2017322021100
BAKKEN10-201732380100
BAKKEN9-20171638293858232480047030
BAKKEN8-2017319112914342810829105900
BAKKEN7-20172662576352117685153261380
BAKKEN6-2017309377940633311517112840
BAKKEN5-201731102181010635712107118610
BAKKEN4-2017288004810132793328923220
BAKKEN3-201731101491013731811626113810
BAKKEN2-2017289545944628510713104940
BAKKEN1-20173110635107573501204211508297
BAKKEN12-201631106971058431511582113540
BAKKEN11-201629105391068935511311110960
BAKKEN10-201631114621148431512258120100
BAKKEN9-20161987458486137836682170
BAKKEN8-2016002370000
BAKKEN7-201630105341055835011332100351065
BAKKEN6-20163011354112794401259689453412
BAKKEN5-20163112067119914791411513656212
BAKKEN4-201627101891012852811146109730

20212:
PoolDateDaysBBLS OilRunsBBLS WaterMCF ProdMCF SoldVent/Flare
BAKKEN5-2018004030000
BAKKEN4-20181632393127473246523760
BAKKEN3-201819548656317564317413950
BAKKEN2-20182553105088595444542610
BAKKEN1-201831105131072518698937864150
BAKKEN12-2017312190321790484124087238390
BAKKEN11-201730194521980953791966718479968
BAKKEN10-201721121501140168471354971916268
BAKKEN9-20170000000
BAKKEN8-20170000000
BAKKEN7-20170000000
BAKKEN6-20170000000
BAKKEN5-20171002000
BAKKEN4-20175380363981151140
BAKKEN3-201761573200108990
BAKKEN2-2017416217001740158
BAKKEN1-2017315828401540153
BAKKEN12-20162147001620146
BAKKEN11-201631521840500
BAKKEN10-2016215127821231150
BAKKEN9-2016314800300
BAKKEN8-201621410280080
BAKKEN7-201671892032589880

2 comments:

  1. I think your cumulative barrels is off on the Whitman 2-34. I believe that's a million barrel well. And I think the 3-34 was originally drilled short due to downhole problems of some sort, I cant remember what exactly. Then I think they drilled it to depth last year and did a frac on it. But I could be wrong all together. Doing all of this from memory.

    ReplyDelete
    Replies
    1. You are absolutely correct on both counts. I really messed up on that one. I thought there was something wrong when I posted the "cum" on #20210, Whitman 2034H -- but did not double check -- and on 20212, there were problems initially and they went back in.

      Thank you. This will be fun to correct.

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